Answer:
Amanda spent $150.31. When 8 is substituted for g and 3 is substituted for t, the expression simplifies to 132.4 + 17.91.
Explanation:
g = # of gallons of paint for $16.55 per gallon
t = # of pints of paint thinner for $5.97 per pint
Amanda bought 8 gallons of paint and 3 pints of paint thinner. To find out how much money she spent, just substitute 8 for g and 3 for t in the expression you selected.
16.55(8) + 5.97(3) = $150.31
Hope this helps!